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Message-ID: <20050117012958.13533.qmail@web51106.mail.yahoo.com>
Date: Sun, 16 Jan 2005 17:29:58 -0800 (PST)
From: Steve Brooks <prvt_pilot@yahoo.com>
Subject: Re: [FlyRotary] Re: Need Advise
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
In-Reply-To: <list-609538@logan.com>
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--- Russell Duffy <13brv3@bellsouth.net> wrote:

> I am wondering if being overfull was the cause.
> 
> Being overfull certainly won't help.  If the oil
> gets high enough to get
> back on the oil pump chain, or counterweight, it
> will get foamed up, and
> that helps it escape.  Did you run the engine any
> with the plane parked on
> it's nose?  On deceleration (belly brake ?), do you
> think you could be
> sloshing oil forward 
> 
I didn't run it with it on its' nose, but descending
to land was nose low, but it was a pretty shallow
glide.  Nothing different than usual.

> Originally there was a tube from the crankcase vent
> to
> a fitting on the side of the filler tube.  
>  
> Now I'm confused.  How many vents do you have?  You
> only need one, usually
> the one on the filler tube.  All this does is keep
> the pan area from being a
> sealed container, to allow room for expansion and
> contraction when the oil
> heats up.  It will also vent off any combustion
> pressure that gets by the
> side seals.  
>  
Maybe I'm using the wrong term.  This vent is located
on the center housing very near the filler tube.  I
believe that there was a tube on the engine originally
that went from it to a port on the filler neck, but I
very well may be wrong.  

> The only time I ever got any significant oil
> discharge is when I happened to
> put the vent line in a low pressure area with lots
> of airflow.  It seemed to
> suck it out under those conditions, but moving the
> vent to another point
> stopped it.  It sounds like your vent line is still
> inside the cowl, but is
> it in an area that might be getting a lot of
> airflow, causing a negative
> pressure?  

>I don't know, but it is near the top of the cowling. 
Originally I didn't have anything hooked to it at all,
but after hearing about some others have oil
discharge, I hooked up a piece of tubing to it and ran
it up near the top of the cowling.  I didn't have any
oil come out before today, and I've made, I guess,
about 4 flights since adding the tube.  Maybe I just
need to take the tube back off !

  
> Glad to hear the temps are behaving, but at twice
> around the pattern every
> weekend, you're going to beat my longest time to 40
> hours record :-)

I'm well aware of the record, but hoping to avoid it.
Here lately, I've been having so many issues, that
I've stopped feeling sorry for John.  Instead I feel
sorry for me.
>  
>Steve
>  
>